Gallery2: Fix actionbar hide in timeline page.

The method of onPhotoChanged may be invoked after onBackPressed when
there are a lot of pictures on phone. logout DataListener of
mPhotoDataAdapter. keep the onPhotoChanged not invoked after
backPressd.

Change-Id: I75aada6c29fcdb30d97937bf1e5e2f267f3fb933
CRs-Fixed: 989258

1 files changed, 3 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/app/PhotoPage.java b/src/com/android/gallery3d/app/PhotoPage.java
index e5cf6a731..4ea2e483d 100644
--- a/src/com/android/gallery3d/app/PhotoPage.java
+++ b/src/com/android/gallery3d/app/PhotoPage.java
@@ -992,6 +992,9 @@ public abstract class PhotoPage extends ActivityState implements
                             "drawer");
                     mActivity.getToolbar().setNavigationIcon(R.drawable.drawer);
                     ((GalleryActivity)mActivity).toggleNavDrawer(true);
+                    if (mModel instanceof PhotoDataAdapter) {
+                        ((PhotoDataAdapter) mModel).setDataListener(null);
+                    }
                 }
             }
         }